package com.xuecheng.base.exception;

import com.xuecheng.base.exception.CommonError;
import com.xuecheng.base.exception.RestErrorResponse;
import com.xuecheng.base.exception.XueChengPlusException;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

import java.util.ArrayList;

@Slf4j
@ControllerAdvice
public class GlobalExceptionHandler {
    @ResponseBody
    @ExceptionHandler(XueChengPlusException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse customException(XueChengPlusException e) {
        log.error("【系统异常】{}",e.getErrMessage(),e);
        return new RestErrorResponse(e.getErrMessage());

    }

    @ResponseBody
    @ExceptionHandler(Exception.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse exception(Exception e) {

        log.error("【系统异常】{}",e.getMessage(),e);
        e.printStackTrace();
        if (e.getMessage().equals("不允许访问")){
            return new RestErrorResponse("没有操作此功能的权限");
        }

        return new RestErrorResponse(CommonError.UNKOWN_ERROR.getErrMessage());

    }

    @ResponseBody
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse MethodArgumentNotValidException(MethodArgumentNotValidException e){

        BindingResult bindingResult = e.getBindingResult();
        ArrayList<String> errors = new ArrayList<>();
        bindingResult.getFieldErrors().stream().forEach(item->{
            errors.add(item.getDefaultMessage());
        });

        //拼接错误信息
        String errMessage = StringUtils.join(errors, ",");
        log.error("【系统异常】{}",e.getMessage(),e);

        //解析出异常信息
        RestErrorResponse restErrorResponse = new RestErrorResponse(errMessage);
        return restErrorResponse;
    }
}
